adduser

add and remove users and groups
This package includes the 'adduser' and 'deluser' commands for creating
and removing users.
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- 'adduser' creates new users and groups and adds existing users to
existing groups;
- 'deluser' removes users and groups and removes users from a given
group.
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Adding users with 'adduser' is much easier than adding them manually.
Adduser will choose appropriate UID and GID values, create a home
directory, copy skeletal user configuration, and automate setting
initial values for the user's password, real name and so on.
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Deluser can back up and remove users' home directories
and mail spool or all the files they own on the system.
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A custom script can be executed after each of the commands.
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Development mailing list:
http://lists.alioth.debian.org/mailman/listinfo/adduser-devel/